Improved shutter-lock



, UNITED STATES SAML. S. GARVER, OF HAMILTON, OHIO.

IMPROVED SHUTTER-LOCK.

Specification forming part of Letters Patent No. 48,925. dated July 25, 1865.

To all whom it may concern:

Be it known that I, SAMUEL S. GARVER, of Hamilton,in the county of Butler and State of Ohio, have invented a new and Improved Shutter-Lockfor Store-Doors and Similar Purposes; and I. do hereby declare that the followingis a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference beinghad to the accompanying drawings, forming part of this specification, in which- Figure 1 is an outer end view of my invention; Fig. 2, an inner end view of the same; Fig. 3, a section ofthe same, taken in the line as 00, Fig. 2.

Similar parts.

This invention consists in the employment or use of a rack-bolt and a pinion or part pinion, arranged as hereinafter fully shown and described.

A represents the case of the lock, which may letters of reference indicate like be of any proper form, and has a case, B,fitted within it, said bolt havinga longitudinal slot, a, made in it to receive a rod, b, which serves as a guide for the bolt, as shown clearly in Figs. 2 and 3. This bolt is notched to form a rack at one edge, as shown clearly in Fig. 3, at c, and into this rack a pinion or part pinion,

0, gears, the latter having a square opening, (1, at its center to receive akey, which is simply a square rod. Thebolt Bis provided with a projection, e, to serve as a stop, the part pinion 0 having a notch,f, made in it to receive the projection when the bolt B is thrown back or unlocked, as shown clearly in Fig. 3. The bolt B has a spring, D, bearing upon its edge to preventit from moving casually. The bolt. it will be seen, may be readily moved back and forth in order to lock and unlock the look by turning the pinion O with the key. The lockoase A is fitted in a mortise either in the door or shutter.

The device is extremely simple and efficient, may be constructed at a very moderate cost, and readily applied.

1 claim as new and desire to secure by Letters Patent- The door or shutter lock herein described, consisting of the case A, rack-bolt B, pinion or segment 0, projection e, notch f, and friction-spring I), all constructed and arranged substantially as and for the purpose specified.

SAML. S. GAR-VER.

Witnesses:

WILLIAM It; OoPPAGE, P. K. LANDIs, 

